[EN] PREPARATION OF BENZOFURANS AND USE THEREOF AS SYNTHETIC INTERMEDIATES<br/>[FR] PRÉPARATION DE BENZOFURANES ET LEUR UTILISATION EN TANT QU'INTERMÉDIAIRES DE SYNTHÈSE
申请人:MAPI PHARMA HOLDINGS CYPRUS LTD
公开号:WO2011099010A1
公开(公告)日:2011-08-18
The present invention provides several synthetic methods for preparing N-(2-butylbenzofuran-5-yl)-N-(methylsulfonyl)methanesulfonamide, a compound of formula (3), an intermediate in the preparation of Dronedarone. The present invention further provides a process for preparing Dronedarone, comprising the steps of converting 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) to Dronedarone, wherein the 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) is prepared by the processes of the present invention.
本发明提供了几种合成方法,用于制备N-(2-丁基苯并呋喃-5-基)-N-(甲磺酰基)甲磺酰胺,该化合物为式(3)中的中间体,用于制备多瑞那酮。本发明还提供了一种制备多瑞那酮的方法,包括将式(3)中的2-丁基-5-双(甲磺酰)-胺基苯并呋喃转化为多瑞那酮的步骤,其中式(3)中的2-丁基-5-双(甲磺酰)-胺基苯并呋喃是通过本发明的方法制备的。